LinuxKPI: Implement dma_map_resource/dma_unmap_resource functions.
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Authored by wulf on Jun 28 2021, 8:53 PM.

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Details

Reviewers

• hselasky
manu

Summary

dma_map_resource and dma_unmap_resource functions are API for mapping
and unmapping of memory-mapped IO resources so they can be accessed by
the device.

Required by drm-kmod v5.5 to be built.

Test Plan

This naive implementation is completely untested as drm-kmod v5.5 uses
these functions only for testing purposes yet.

Diff Detail

Repository

rS FreeBSD src repository - subversion

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Lint Passed

Unit

No Test Coverage

Build Status

Buildable 40150
Build 37039: arc lint + arc unit

Event Timeline

wulf created this revision.Jun 28 2021, 8:53 PM

Herald added subscribers: linuxkpi, emaste, imp. · View Herald TranscriptJun 28 2021, 8:53 PM

wulf requested review of this revision.Jun 28 2021, 8:53 PM

Harbormaster completed remote builds in B40150: Diff 91460.Jun 28 2021, 8:53 PM

Depending on the outcome in D30932 ulong vs. uintptr_t here too.

drm-kmod is a better place to stay until these routines get tested

Revision Contents
Changeset List

Path

Size

sys/

compat/

linuxkpi/

common/

include/

linux/

dma-mapping.h

16 lines

Diff 91460

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sys/compat/linuxkpi/common/include/linux/dma-mapping.h

LinuxKPI: Implement dma_map_resource/dma_unmap_resource functions.AbandonedPublicActions